How to detect iphone is on silent mode

Question

I am developing an application. In that i want to detect through coding that "is iPhone on silent mode or not?". I am developing it by using cocoa with Objective-C.

If anyone knows it kindly reply.

Answer 1

The reason Pirripli's code does not work is that the simulator does not support the test and the code does not check for errors. Corrected code would look like:

CFStringRef state = nil;
UInt32 propertySize = sizeof(CFStringRef);
AudioSessionInitialize(NULL, NULL, NULL, NULL);
OSStatus status = AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &propertySize, &state);

if (status == kAudioSessionNoError)
{
    return (CFStringGetLength(state) == 0);   // YES = silent
}
return NO;